CN1942632A - A method for shaking a work implement - Google Patents
A method for shaking a work implement Download PDFInfo
- Publication number
- CN1942632A CN1942632A CNA200580011852XA CN200580011852A CN1942632A CN 1942632 A CN1942632 A CN 1942632A CN A200580011852X A CNA200580011852X A CN A200580011852XA CN 200580011852 A CN200580011852 A CN 200580011852A CN 1942632 A CN1942632 A CN 1942632A
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- China
- Prior art keywords
- hydraulic valve
- function
- work implement
- control
- sudden change
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
- E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
- E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
- E02F9/221—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for generating actuator vibration
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
A method for controlling a function of a work implement by means of a device including a source of pressurized fluid (1), a circuit of pressurized fluid (2) for driving the work implement, an electronically controlled hydraulic valve (5) being arranged in the circuit of pressurized fluid (2) for controlling the function of the work implement, a control unit (4) for controlling the hydraulic valve (5) based upon a signal from a control member (3) for transmitting a control command to the control unit (4), wherein the control unit (4) is arranged for controlling the hydraulic valve (5) in accordance with a smooth mode function or an abrupt mode function. The opening time for opening the hydraulic valve (5) to a predetermined opening degree is changed when switching from one operating mode function to the other operating mode function.
Description
Technical field
The present invention relates to a kind of method of passing through the function of a device control work implement, wherein, described device comprises the confined flow body source, be used to drive the pressurized fluid loop of described work implement, be arranged in the electro hydraulic valve of the function that is used to control work implement in the described pressurized fluid loop, control module, this control module is based on from the described hydraulic valve of signal controlling that sends the control element of control command to this control module, wherein, this unit is set to control described hydraulic valve according to smooth mode function or sudden change mode capabilities.
In addition, the present invention relates to a kind of computer program, be used on working machine, carrying out method of the present invention with described work implement and described device.
The present invention is applicable to general working machine.Be particularly suitable for loader.Explanation for example, such application will be described hereinafter.This work implement can be any work implement, but is preferably the scraper bowl of loader.Multiple different operating function can be controlled by the mode and the method for the present invention's regulation.But, illustrate for example, the tilt function and the moving function of loader or bulldozer scraper bowl will be described.
Background technology
When having the machinery of scraper bowl, when for example using electric hydraulic equipment in loader, bulldozer and the excavator, the control signal that is produced by control element by the operator is used to scraper bowl control usually.Therefore, under normal circumstances, computer or control module are used to handle this signal and guarantee to operate stably.Therefore, when the valve that is used for scraper bowl control or similar device activated, normally, the acceleration of described scraper bowl and slowing down was slowed down, with provide start stably and stop, the better littler fatigue stress on stability, frame for movement and the hydraulic test.But this by the shake the means cleaning bucket time can go wrong.
In traditional machinery, the operator moves forward and backward scraper bowl usually apace in this way foul is shaked out scraper bowl.This motion of scraper bowl is triggered by moving forward and backward a control lever apace by the operator, the bucket tilt bar that described control lever is normally conventional.
A kind of as can be known scraper bowl that is used for electric hydaulic machinery is shaken off mechanism from people's such as Francis U.S. Patent application US2002/0065575.Consider disclosing of described patent application, the preamble of the application's claim 1 has been done adaptability revision.According to US2002/0065575, described scraper bowl is shaken off mechanism and is comprised mode control module, and this module stores is in memory devices and comprise steady mode module and the mode module of suddenling change.Described sudden change mode module can be by control lever or control stick the mode of specific operation be activated.When activating described sudden change mode module, described control lever feature is changed, thereby given control lever displacement cause hydraulic valve be used to shake another open response, situation about moving with control corresponding bar when described steady mode module is activated is different.This can regard that also signal characteristic is changed according to selected operator scheme module as.
Therefore, according to aforementioned prior art, when from an operator scheme module when another kind switches, one group of given controlling parameter is changed.In this case, this change is to increase according to the opening value of given control lever shift value hydraulic valve, maybe the increase of the maximum opening of the hydraulic valve when operating to sudden change pattern operation switching from steady pattern.
Summary of the invention
An object of the present invention is to provide a kind of selectable method, this method can be used for quick response, the speed of controlling the tilt function of working machine scraper bowl or similar devices and expectation being provided and the slow-response of expectation is provided in steadily pattern is operated in the operation of sudden change pattern.Described response determines that with the speed of the hydraulic fluid of the specified quantitative that moves of realizing described work implement wherein, described device work typically is made of the scraper bowl of loader by flowing through hydraulic valve.
The method that purpose of the present invention is passed through to be introduced is realized, the method is characterized in that: when from a kind of operator scheme function when another kind of operator scheme function is switched, the time of opening that hydraulic valve is opened to a predetermined aperture is changed.In other words, when from a kind of operator scheme function when another kind of operator scheme function is switched, one group of given controlling parameter is changed, in the time range of slope, the time that is used for hydraulic valve is opened to given aperture is changed along with described switching.
When from steady mode capabilities when the sudden change mode capabilities switches, the time of opening that hydraulic valve is opened to predetermined aperture is reduced.
According to an embodiment, when by a kind of operator scheme function when another kind switches, the maximum opening of hydraulic valve also is changed.In other words, be not only the slope time, aperture also is changed, like this, owing to realize passing the given flow velocity of described valve quickly, and simultaneously bigger towards the flow of described openend, thus dual advantage produced.
According to the present invention, when from a kind of operator scheme function when another kind switches, the aperture of the hydraulic valve corresponding with the given position of control element also is changed.
Should be understood that: when the sudden change mode capabilities switched, described aperture increased from steady mode capabilities.
According to a preferred embodiment, described control element is a control lever, be suitable for manually being moved to an angle of displacement a from the start position, and the aperture of described hydraulic valve is determined by this angle of displacement a.What also can expect is: described hydraulic valve is when response receives the control module of the order of switching to sudden change pattern operation and be independent of described angle of displacement and be opened to a given aperture, and therefore, described control lever very little inclination can produce enough and predetermined aperture.Should be understood that: described wording control lever also comprises control wheel alleged in the works and expressions for everyday use.
The selection of operator scheme function is preferably carried out according to speed and frequency that the operator moves forward and backward control element by control module.
According to the present invention, when by steady mode capabilities when the sudden change mode capabilities switches, the pressure stage that device work was provided by confined flow body source being used to of providing can increase.When receiving the order of working under the sudden change pattern, this can be simply allows more high pressure from the hydraulic pump of working machine to act on the fluid that flows through hydraulic valve by control module to realize.This can be by control hydraulic valve upstream pressure regulator or the output by the described pump of direct control realize.
The present invention also comprises an electric hydaulic machinery, it is characterized in that comprising defined device and computer program in the preamble.Preferably, this machinery is loader, and described device work is tiltable scraper bowl, and described operating function is the bucket tilt function.
To detailed description and the claims of embodiment, supplementary features of the present invention and advantage will be more obvious by hereinafter.
Description of drawings
For illustration purpose, the present invention gives more detailed description with reference to the accompanying drawings, wherein:
Fig. 1 is the wiring diagram according to device of the present invention;
Fig. 2 has shown for sudden change mode module and the flow that flows through hydraulic valve of steady mode module and the chart that concerns between the time according to prior art;
Fig. 3 has shown according to one embodiment of present invention for sudden change mode module and the flow that flows through hydraulic valve of steady mode module and the chart that concerns between the time;
Fig. 4 is that an alternate embodiments according to the present invention has shown for sudden change mode module and the flow that flows through hydraulic valve of steady mode module and the chart that concerns between the time.
The specific embodiment
Fig. 1 has schematically presented the wiring diagram of the device that is used to implement method of the present invention.This device comprises confined flow body source 1, an oil pump for example, the pressurized fluid loop 2 that is made of the pipeline that for example is used to conduct described pressurized fluid.In addition, this device comprises the control element 3 that is preferably control lever, control module or computer 4, valve 5 and the hydraulic-driven cylinder body-piston unit 6 that is used for directly controlling the work implement (not shown).This device also comprises container 7, constitutes the low-pressure side of described hydraulic circuit 2.What further, it is to be appreciated that is: the additional member that appears at usually in the hydraulic circuit can be included in the described device.For example, described valve 5 is to be controlled in advance by electric hydaulic pressure reducer (solenoid) 15,16.
Advantageously, describedly be used to implement device of the present invention and be arranged on working machine, to be used to control the work implement of this working machine.According to a preferred embodiment, this working machine is a for example front-end loader of loader, and wherein said work implement needs quiet run and needs the operation of mutability ground in the specific occasion in operate as normal, that is to say to realize quick, the mutation movement of described utensil.Typically, this utensil is a scraper bowl, and hope utilizes device of the present invention to realize the dither functions of this scraper bowl by the mode of the manual command that the operator sends, and can guarantee its quiet run simultaneously in operate as normal.
This device works by this way, be the operator for example the driver be positioned at the driving cabin of loader, send signal by the operation control element 3 that is arranged in the driving cabin in this case, be preferably the signal of telecommunication, these signals are passed to valve 5 by control module 4, so that control valve 5.Usually, described control module 4 is used to handle described signal, or determines predetermined many groups controlling parameter, with one in two kinds of operator schemes that realize work implement, i.e. and steadily pattern operation or the operation of sudden change pattern.For this reason, this control module 4 is equipped with software, and this software comprises a control algolithm that is used for the operation of steady pattern, or control module and be used for the algorithm of sudden change pattern operation, control module.Also can regard this control module as and comprise two groups of given controlling parameter, one group is used for steady pattern operation, and one group is used for the operation of sudden change pattern, perhaps when the one group of controlling parameter that is changed when another kind switches by a kind of operator scheme function.Advantageously, described control element 3 arranges by this way, and signal can be produced by this control element by the operator, a kind of with in the select operating mode function, or select a kind of in the module.Usually, because steadily the pattern operation is a kind of operation of carrying out automatically, so the operation of sudden change pattern is selected in this way.
The several method that is used for select operating mode module/operator scheme function is suggested.Wherein, a kind of below especially needing to introduce: control element is a control lever, and the operator with a specific frequency level with pulling before and after it repeatedly, and wherein, this operation is surveyed by control module 4 and the latter produces switching to the operation of sudden change pattern; Described device comprises the button that is connected to control module 4, but by this button activated mutant mode module; Described device comprises the button that is connected to control module 4, as long as described control lever used on one's own initiative, but by button activated mutant mode module just; Described device comprises the button that is connected to control module 4.The sudden change mode module only just is activated when button is pressed; This device comprises the button that is connected to control module 4, and then when this button was pressed, this control module 4 can send the control signal corresponding with the control lever that is spurred by front and back voluntarily.
Fig. 2-4 has shown the different modes of carrying out the operation of sudden change pattern.Fig. 2 is the chart according to one type of prior art syringe, from this figure, be apparent that the switching of operating to the sudden change pattern can cause the change with regard to the control lever feature of given control lever position, produce another aperture of valve, wherein this valve is controlled and be used for determining pressurized fluid to flow to preamble and at the flow of the cylinder body-piston unit of the device of type shown in Fig. 1.But when the variation of the aperture area of considering each chronomere, the opening speed of this valve is identical for two kinds of operator schemes.In other words, have variable control lever feature or variable signal characteristic, this depends on how the user goes to treat it.In the square frame 8 of Fig. 2, flow or, if you wish that valve opening is depicted as the controlling parameter on one group of basis according to the time.In operation, act on the controlling parameter on this group basis by square frame 11 expressions and by the filter function that control module 4 is carried out.Steadily pattern operation
mOperate with the sudden change pattern
aTime graph respectively shown in the square frame 9.Clearly, the slope time (ramp time), used time when just valve 5 being opened to the aperture corresponding, do not change, for the sudden change mode capabilities with given control lever displacement a α
aWith steady mode capabilities
mAll remain unchanged.
Fig. 3 shows first embodiment according to the principle of the inventive method, according to the present invention, with identical control lever feature application in steady mode capabilities and the sudden change mode capabilities.That is to say, in steadily pattern operation
mOperate with the sudden change pattern
aIn all keep identical maximum valve opening.Be similar to the square frame 8 among Fig. 2, square frame 10 has shown the curve of one group of basis controlling parameter, has the given time constant or slope (ramp) that are used for valve 5 apertures.Represent by square frame 11 by the filter function that control module 4 is carried out.According to specified be steady pattern operation
mOr sudden change pattern operation
a, described wave filter will work in a different manner, and this clearly, in this square frame 12, has described the operation of sudden change pattern respectively in square frame 12
aWith steady pattern operation
mCurve.The operation of sudden change pattern
aThe slope time, just be used for the time constant of valve opening, than steady pattern operation
mWeak point.In other words, when from a kind of operator scheme when another kind switches, controlling parameter, or rather, variation has taken place in time constant.Basically, this device is fast, that is to say, operation has provided base response fast corresponding to the sudden change pattern.Therefore, in steady pattern operation with steady mode module, the signal that control module 4 is handled from control element/bar 3 by traffic filter or kinetic filter 11 usually.Doing like this is in normal running, for example excavates or loads with scraper bowl, adopts the long slope time to realize quiet run.Therefore, when switching to the operation of sudden change pattern, the effect of wave filter 11 or the filtering of control signal are eliminated or reduce.Therefore, the sudden change mode module is operated under the situation that the control signal of control element 3 is lowered or eliminates.
Fig. 4 shows second example of the principle of the method according to this invention, this embodiment is having of proposing the in the prior art principle that changes the control lever characteristic and the combining of the principle of the invention, that is to say that the operation of sudden change pattern has the different slope time with steady pattern operation.Be suitable for carrying out operations according to the instant invention for great majority, the hydraulic circuit that for example is used to control scraper bowl and carries out the scraper bowl dither functions, this combination may be best solution.In square frame 13, show one group of time dependent flow diagram of basis controlling parameter, and the operation of sudden change pattern has been shown in square frame 15
aWith steady pattern operation
mResponse curve.With regard to valve opening, steadily pattern operation
mMean that employed slower basically operation and littler control lever displacement response combined with longer slope time, in this case, as with previous embodiments, this slope time realizes by the wave filter mode by square frame 11 expressions.Operate in the sudden change pattern
aIn, compare with the base set shown in the square frame 13, these parameters of determining maximum opening and time constant (slope time) are without limits and change in principle.
Should be understood that under the prerequisite that does not deviate from scope of the present invention, various distortion of the present invention for a person skilled in the art all are conspicuous, wherein, scope definition of the present invention is in the claims of being supported by manual and accompanying drawing.
Especially, various within the scope of the invention dissimilar filtering signals and combination thereof are possible all.These signals can be simulation or digital.
Can imagine that also when sudden change pattern operation is switched, the pressure that acts on the valve 5 increases, for example by allow pump 1 carry corresponding with sudden change pattern service load, than normal condition (the steadily pattern operation) mode of high pressure more.This can realize by the output of change pump 1 or by the mode of controlling the pressure regulator that suitably is positioned at described valve 5 upstreams.
Should be understood that wording used herein " operator scheme function " can be substituted by wording such as " operator scheme ", " method of work " of equivalence, " operating principle " etc.
Claims (12)
1. one kind is passed through the method that a device is controlled the function of work implement, and described device comprises:
-confined flow body source (1);
-be used to drive the pressurized fluid loop (2) of this work implement;
-be arranged in the described pressurized fluid loop (2), be used to control the electro hydraulic valve (5) of the function of described work implement;
-based on the control module (4) from the described hydraulic valve of signal controlling (5) of control element (3), described control element (3) is used for sending control command to this control module (4), wherein
Described control module (4) is set to according to steady mode capabilities or sudden change mode capabilities control hydraulic valve (5),
It is characterized in that, when from a kind of operator scheme function when another kind of operator scheme function is switched, the time of opening that is used for described hydraulic valve (5) is opened to a predetermined aperture is changed.
2. method according to claim 1,
It is characterized in that, when from steady mode capabilities when the sudden change mode capabilities switches, the time of opening that described hydraulic valve (5) is opened to a predetermined aperture is reduced.
3. method according to claim 1 and 2,
It is characterized in that, when from a kind of operator scheme function when another kind of operator scheme function is switched, the maximum opening of described hydraulic valve (5) is changed.
4. method according to claim 3,
It is characterized in that, when from a kind of operator scheme function when another kind of operator scheme function is switched, the aperture of the described hydraulic valve (5) corresponding with the given position of described control element (3) is changed.
5. according to arbitrary described method among the claim 3-4,
It is characterized in that, when from steady mode capabilities when the sudden change mode capabilities switches, described aperture increases.
6. according to arbitrary described method among the claim 1-5,
It is characterized in that described control element (3) is a control lever, be suitable for manually being adjusted to an angle of displacement a, and the aperture of described hydraulic valve (5) is determined by this angle of displacement a from the start position.
7. according to arbitrary described method among the claim 1-6,
It is characterized in that the selection of described operator scheme function is determined based on speed and frequency that the operator moves forward and backward described control element (3) by described control module (4).
8. according to arbitrary described method among the claim 1-7,
It is characterized in that, when by steady mode capabilities when the sudden change mode capabilities switches, the pressure stage that work implement was provided by described confined flow body source (1) being used to of providing increases.
9. according to arbitrary described method among the claim 1-8,
It is characterized in that when being applied to loader, described work implement is tiltable scraper bowl, described operating function is the bucket tilt function.
10. computer program,
It is characterized in that it is used for, and enforcement of rights requires the described method of the arbitrary claim of 1-9 on the working machine with described work implement and described device.
11. computer program according to claim 10,
It is characterized in that the part of the described control module of this product composition (4).
12. a working machine,
It is characterized in that it comprises claim 10 or the 11 described computer programs that are used for the described method of the enforcement of rights requirement arbitrary claim of 1-9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0401029A SE526989C2 (en) | 2004-04-19 | 2004-04-19 | Method for shaking work tools |
| SE04010294 | 2004-04-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1942632A true CN1942632A (en) | 2007-04-04 |
| CN100588781C CN100588781C (en) | 2010-02-10 |
Family
ID=32322632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200580011852A Active CN100588781C (en) | 2004-04-19 | 2005-03-29 | A method for shaking a work implement |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7571604B2 (en) |
| EP (1) | EP1740778B1 (en) |
| JP (1) | JP4972544B2 (en) |
| KR (1) | KR101284276B1 (en) |
| CN (1) | CN100588781C (en) |
| AT (1) | ATE546591T1 (en) |
| SE (1) | SE526989C2 (en) |
| WO (1) | WO2005100701A1 (en) |
| ZA (1) | ZA200607596B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615024A (en) * | 2013-11-20 | 2014-03-05 | 广西柳工机械股份有限公司 | Loader and bucket loading operation control method thereof |
| CN103615025A (en) * | 2013-11-20 | 2014-03-05 | 广西柳工机械股份有限公司 | Loader and control method for loading operation of loader |
| CN104011302A (en) * | 2011-12-19 | 2014-08-27 | 日立建机株式会社 | Work Vehicle |
| CN104334805A (en) * | 2012-05-22 | 2015-02-04 | 沃尔沃建造设备有限公司 | Bucket movement control device for automatically shaking off foreign substances and method therefor |
| CN104728201A (en) * | 2013-12-19 | 2015-06-24 | 纳博特斯克有限公司 | Direction converter valve of construction machine, opening ratio determining apparatus the same and opening ratio determining method the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7467514B2 (en) * | 2006-07-17 | 2008-12-23 | Caterpillar Inc. | System and method for controlling shakability of a work tool |
| US7726125B2 (en) * | 2007-07-31 | 2010-06-01 | Caterpillar Inc. | Hydraulic circuit for rapid bucket shake out |
| US7866149B2 (en) * | 2007-09-05 | 2011-01-11 | Caterpillar Inc | System and method for rapidly shaking an implement of a machine |
| KR20110071907A (en) * | 2009-12-22 | 2011-06-29 | 두산인프라코어 주식회사 | Apparatus and method for controling eletronic oil pressure using variable behavior characteristic |
| GB201113697D0 (en) * | 2011-08-09 | 2011-09-21 | Agco Int Gmbh | Control means for controlling an implement attached to a vehicle |
| DE102014111505A1 (en) | 2014-08-12 | 2016-02-18 | Linde Hydraulics Gmbh & Co. Kg | Hydrostatic drive system and method for generating a shaking function of a hydraulic load |
| JP6604624B2 (en) * | 2015-05-11 | 2019-11-13 | キャタピラー エス エー アール エル | Automatic vibration device for work machines |
| US10246855B2 (en) | 2016-10-10 | 2019-04-02 | Wacker Neuson Production Americas Llc | Material handling machine with bucket shake control system and method |
| US10113564B2 (en) | 2016-12-23 | 2018-10-30 | Robert Bosch Gmbh | Hydraulic system and method of operating the same |
| DE102018204268A1 (en) * | 2018-03-20 | 2019-09-26 | Jungheinrich Aktiengesellschaft | Shaking function for container emptying |
| WO2018199342A1 (en) * | 2018-06-19 | 2018-11-01 | 株式会社小松製作所 | Control system for work vehicle, and control method for work vehicle |
| US10801182B2 (en) | 2018-10-19 | 2020-10-13 | Cnh Industrial America Llc | System and method for controlling work vehicle operation based on multi-mode identification of operator inputs |
| US11732442B2 (en) | 2019-11-21 | 2023-08-22 | Cnh Industrial America Llc | System and method for controlling the operation of a work vehicle to provide improved responsiveness when commanding implement movement |
| GB202019672D0 (en) * | 2020-12-14 | 2021-01-27 | Caterpillar Sarl | Hydraulic control system and method for a bucket shake operation in a work machine with a hydraulic pump and unloader valve |
| US11761170B2 (en) | 2021-11-17 | 2023-09-19 | Robert Bosch Gmbh | Apparatus for facilitating bucket movement |
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| US5235809A (en) * | 1991-09-09 | 1993-08-17 | Vickers, Incorporated | Hydraulic circuit for shaking a bucket on a vehicle |
| US5765594A (en) * | 1996-04-02 | 1998-06-16 | Danfoss A/S | Hydraulic control valve |
| US5701793A (en) * | 1996-06-24 | 1997-12-30 | Catepillar Inc. | Method and apparatus for controlling an implement of a work machine |
| US5880957A (en) * | 1996-12-03 | 1999-03-09 | Caterpillar Inc. | Method for programming hydraulic implement control system |
| JP3494853B2 (en) * | 1997-07-01 | 2004-02-09 | コベルコ建機株式会社 | Hydraulic excavator hydraulic control device |
| JP3079074B2 (en) * | 1997-09-17 | 2000-08-21 | 新キャタピラー三菱株式会社 | Fluid pressure circuit of swivel type machine |
| US6029445A (en) * | 1999-01-20 | 2000-02-29 | Case Corporation | Variable flow hydraulic system |
| US6725105B2 (en) * | 2000-11-30 | 2004-04-20 | Caterpillar Inc | Bucket shakeout mechanism for electro-hydraulic machines |
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| US6757992B1 (en) * | 2003-01-14 | 2004-07-06 | New Holland North America, Inc. | Skid steer loader bucket shaker |
| US6895319B2 (en) * | 2003-03-07 | 2005-05-17 | Deere & Company | Valve command signal processing system |
-
2004
- 2004-04-19 SE SE0401029A patent/SE526989C2/en unknown
-
2005
- 2005-03-29 KR KR1020067021615A patent/KR101284276B1/en not_active IP Right Cessation
- 2005-03-29 CN CN200580011852A patent/CN100588781C/en active Active
- 2005-03-29 AT AT05722291T patent/ATE546591T1/en active
- 2005-03-29 JP JP2007508298A patent/JP4972544B2/en not_active Expired - Fee Related
- 2005-03-29 EP EP05722291A patent/EP1740778B1/en active Active
- 2005-03-29 WO PCT/SE2005/000466 patent/WO2005100701A1/en not_active Application Discontinuation
-
2006
- 2006-09-11 ZA ZA200607596A patent/ZA200607596B/en unknown
- 2006-10-19 US US11/550,988 patent/US7571604B2/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104011302A (en) * | 2011-12-19 | 2014-08-27 | 日立建机株式会社 | Work Vehicle |
| CN104011302B (en) * | 2011-12-19 | 2016-12-14 | 日立建机株式会社 | Working truck |
| CN104334805A (en) * | 2012-05-22 | 2015-02-04 | 沃尔沃建造设备有限公司 | Bucket movement control device for automatically shaking off foreign substances and method therefor |
| CN103615024A (en) * | 2013-11-20 | 2014-03-05 | 广西柳工机械股份有限公司 | Loader and bucket loading operation control method thereof |
| CN103615025A (en) * | 2013-11-20 | 2014-03-05 | 广西柳工机械股份有限公司 | Loader and control method for loading operation of loader |
| CN103615025B (en) * | 2013-11-20 | 2017-01-04 | 广西柳工机械股份有限公司 | Control method for shovel loading operation of loader and loader |
| CN103615024B (en) * | 2013-11-20 | 2017-01-04 | 广西柳工机械股份有限公司 | Shovel loading operation control method for loader and loader |
| CN104728201A (en) * | 2013-12-19 | 2015-06-24 | 纳博特斯克有限公司 | Direction converter valve of construction machine, opening ratio determining apparatus the same and opening ratio determining method the same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005100701A1 (en) | 2005-10-27 |
| US7571604B2 (en) | 2009-08-11 |
| SE0401029L (en) | 2005-10-20 |
| US20070039457A1 (en) | 2007-02-22 |
| JP2007532808A (en) | 2007-11-15 |
| ZA200607596B (en) | 2008-06-25 |
| EP1740778A1 (en) | 2007-01-10 |
| SE526989C2 (en) | 2005-11-29 |
| ATE546591T1 (en) | 2012-03-15 |
| EP1740778B1 (en) | 2012-02-22 |
| SE0401029D0 (en) | 2004-04-19 |
| KR101284276B1 (en) | 2013-07-08 |
| CN100588781C (en) | 2010-02-10 |
| KR20060133033A (en) | 2006-12-22 |
| JP4972544B2 (en) | 2012-07-11 |
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